var app = angular.module('sentinelDashboardApp');

app.service('DegradeService', ['$http', function ($http) {
    this.queryMachineRules = function (app, ip, port) {
        var param = {
            app: app,
            ip: ip,
            port: port
        };
        return $http({
            url: 'degrade/rules.json',
            params: param,
            method: 'GET'
        });
    };

    this.newRule = function (rule) {
        return $http({
            url: '/degrade/rule',
            data: rule,
            method: 'POST'
        });
    };

    this.saveRule = function (rule) {
        var param = {
            id: rule.id,
            resource: rule.resource,
            limitApp: rule.limitApp,
            grade: rule.grade,
            count: rule.count,
            timeWindow: rule.timeWindow,
            statIntervalMs: rule.statIntervalMs,
            minRequestAmount: rule.minRequestAmount,
            slowRatioThreshold: rule.slowRatioThreshold,
        };
        return $http({
            url: '/degrade/rule/' + rule.id,
            data: param,
            method: 'PUT'
        });
    };

    this.deleteRule = function (rule) {
        return $http({
            url: '/degrade/rule/' + rule.id,
            method: 'DELETE'
        });
    };

    this.checkRuleValid = function (rule) {
        if (rule.resource === undefined || rule.resource === '') {
            alert('资源名称不能为空');
            return false;
        }
        if (rule.grade === undefined || rule.grade < 0) {
            alert('未知的降级策略');
            return false;
        }
        if (rule.count === undefined || rule.count === '' || rule.count < 0) {
            alert('降级阈值不能为空或小于 0');
            return false;
        }
        if (rule.timeWindow == undefined || rule.timeWindow === '' || rule.timeWindow <= 0) {
            alert('熔断时长必须大于 0s');
            return false;
        }
        if (rule.minRequestAmount == undefined || rule.minRequestAmount <= 0) {
            alert('最小请求数目需大于 0');
            return false;
        }
        if (rule.statIntervalMs == undefined || rule.statIntervalMs <= 0) {
            alert('统计窗口时长需大于 0s');
            return false;
        }
        if (rule.statIntervalMs !== undefined && rule.statIntervalMs > 60 * 1000 * 2) {
            alert('统计窗口时长最大 120s');
            return false;
        }
        // 异常比率类型.
        if (rule.grade == 1 && rule.count > 1) {
            alert('异常比率超出范围：[0.0 - 1.0]');
            return false;
        }
        if (rule.grade == 0) {
            if (rule.slowRatioThreshold == undefined) {
                alert('慢调用比率不能为空');
                return false;
            }
            if (rule.slowRatioThreshold < 0 || rule.slowRatioThreshold > 1) {
                alert('慢调用比率超出范围：[0.0 - 1.0]');
                return false;
            }
        }
        return true;
    };
}]);
